Home / 108,405.51-149,581.74-68,090.55

Finding the Fourth Proportional to 108,405.51, 149,581.74 and 68,090.55

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Solution

The fourth proportional to 108,405.51, 149,581.74 and 68,090.55 is: 93,953.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,405.51 : 149,581.74 = 68,090.55 : x
  2. Step 2: Convert to fraction form
    108,405.51/149,581.74 = 68,090.55/x
  3. Step 3: Cross multiply
    108,405.51x = 149,581.74 × 68,090.55
  4. Step 4: Simplify right side
    108,405.51x = 10,185,102,946.56
  5. Step 5: Solve for x
    x = 10,185,102,946.56/108,405.51
  6. Step 6: Final answer
    x = 93,953.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.